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No Sound from Non-PCM File with Windows Driver Model Audio Drivers

This article was previously published under Q289226
SYMPTOMS
When you try to play a non-PCM (Pulse Code Modulation) WAV audio file on a Windows 2000 computer with WDM (Windows Driver Model) audio drivers installed, no sound is produced.

Related Information:

Troubleshooter: No audio in Windows

Music and sound help with Windows 7
CAUSE
This behavior occurs because the Wdmaud.drv (WDM Audio Driver Mapper) file interfaces with Kmixer.sys (Kernel Mode Audio Mixer), which supports only the PCM audio format.
RESOLUTION
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
WORKAROUND
To work around this behavior, install non-WDM drivers for your audio device.
STATUS
Microsoft has confirmed that this is a problem in Microsoft Windows 2000.

This problem was first corrected in Windows 2000 Service Pack 2.
MORE INFORMATION
Devices such as software-based DVD players require the use of non-PCM audio formats to play content like AC3 (Dolby Digital 5.1) audio.
encode movie
Properties

Article ID: 289226 - Last Review: 09/11/2011 06:25:00 - Revision: 6.0

  • kbbug kbfix kbsound kbwin2000presp2fix KB289226
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